摘要
使用自制的日灼诱导设备 ,在无风或微风的晴天对活体果实进行田间日灼诱导 ,通过改变诱导室内的气温来控制和调节果面温度 ,从而确定了不同苹果品种果实发生日灼的阈值温度。试验证明 :自制的诱导设备运行平稳 ,诱导期间可保持果温基本稳定 ,大多数情况下 ,处理期间果面平均温度与实际设定温度的差异小于 0 12℃ ,温度变化幅度一般小于± 0 5℃。本试验所测定的 9个苹果品种日灼阈值温度为( 4 5 9± 0 5 )℃～ ( 4 8 5± 0 5 )℃。光照对日灼发生有重要影响 ,即使在同样的阈值温度下 ,有光的处理果实发生日灼 。
A special inducing device for fruit sunburn was made to study the 'threshold temperatures'with attached fruit.The results showed that, the device worked perfectly in calm,clear and sunny days.The difference between actual average fruit temperatures during induction and designed temperature was less than 0 12℃ in most cases and the fluctuation of temperatures during treatment was less than±0 5℃.This technique could meet the requirement for field induction of fruit sunburn.There existed some differences among 9 cultivars examined in resistance to thermal injury,ranging from (45 9±0 5)℃ to (48 5±0 5)℃.Light was important in inducing fruit sunburn because at the same'threshold temperature',fruit got sunburned under natural light but didnt necessarily without sunlight.
出处
《园艺学报》
CAS
CSCD
北大核心
2003年第4期446-448,共3页
Acta Horticulturae Sinica
基金
美国华盛顿州苹果研究会资助项目(4 179)
河北农业大学回国留学人员基金资助项目 (2 0 0 2 -0 915 )
